JS ‐ Helpful Codes - deptster/deptster.github.io GitHub Wiki

To enable copy-paste in web browser

e. stoplmmediatepropagation ( )
}
document.addEventListener (
"paste",
dontTreadOnMe,
true
);

Convert JSON into a Map in JS

contactRec = Your JSON data;
const jsonMap = new Map();
for (const key in contactRec) {
 jsonMap.set(key, contactRec[key]);
}
// Now your JSON data has been converted into a map object
console.log(jsonMap);

If you want to access and Manipulate the data in the map you can do the following:

Case 1: To access the value in a specific key and to check if it exists or not

console.log(jsonMap.get('key1'));
console.log(jsonMap.has('key2'));

Case 2: If you want to replace all the null values to "No Data"

jsonMap.forEach((value, key) => {
 if(value == null) {
  jsonMap.set(key, "No Data");
 }
});